Derenda LVS Portable Single-Filter Particulate Matter Sampler
| Brand | Derenda |
|---|---|
| Origin | Germany |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | LVS |
| Flow Range | 1.0–3.5 m³/h (adjustable) |
| Vacuum Pressure | >800 hPa |
| Flow Stability | <2.0% deviation over 24 h |
| Maximum Flow Accuracy | ≤±2% |
| Operating Duration under Max Flow & Resistance | 1 min–999 h |
| Rated Service Life under Max Flow & Resistance | >50,000 h |
| Filter Diameter | 47 mm |
| Dimensions | 300 × 250 × 450 mm |
| Weight | ~19.5 kg |
| Noise Level | <62 dB(A) (per DIN 2058, at 8 m distance) |
| Ambient Operating Temperature | −30°C to +50°C |
| Relative Humidity Range | 0–100% RH |
| Ingress Protection Rating | IP55 |
| Power Supply | 220 V ±10%, 50/60 Hz |
| Max Power Consumption | 390 W |
| Data Storage Capacity | >1,000,000 records (5-min intervals) |
| Load Capacity | ≥50 kPa at 1.0 m³/h |
Overview
The Derenda LVS Portable Single-Filter Particulate Matter Sampler is an engineered solution for gravimetric and compositional analysis of airborne particulate matter in field-deployed environmental monitoring applications. Designed and validated in accordance with German precision instrumentation standards, the LVS implements constant-flow sampling via a high-efficiency diaphragm pump architecture coupled with real-time pressure and flow feedback control. It operates on the principle of isokinetic or static volumetric aspiration—suitable for compliant collection of PM10 and PM2.5 fractions onto standard 47 mm diameter filters per ISO 7708, EN 12341, and U.S. EPA Reference Method PS-1. The system supports both regulatory-grade manual monitoring and extended unattended operation, meeting the physical and metrological requirements outlined in HJ 618–2011, HJ 656–2013, and HJ 93–2013 for Chinese ambient air quality networks.
Key Features
- Compact, lightweight chassis (19.5 kg) with integrated ergonomic carry handles and optional military-grade transit case for rapid deployment across remote or urban sites.
- Dual-mode user interface: tactile rotary encoder plus responsive capacitive touchscreen—enabling intuitive configuration without external PC dependency.
- Embedded RFID-enabled filter holder with programmable tag memory; enables automatic identification of filter lot number, pre-weighing ID, and calibration traceability upon insertion.
- Integrated dual GNSS module (GPS + BeiDou) delivering sub-5 m CEP positioning accuracy under open-sky conditions, supporting georeferenced data logging and audit-ready site documentation.
- Optional 3G/4G LTE modem with TLS 1.2–secured MQTT/HTTP(S) telemetry for real-time transmission of flow, pressure, temperature, humidity, barometric pressure, and operational status to centralized cloud platforms.
- Expandable sensor interface supporting plug-and-play integration of meteorological modules—including ultrasonic wind speed/direction, silicon photodiode-based lux sensor, and calibrated thermohygrometer—enabling co-located five-parameter meteorological correlation with PM mass concentration trends.
- On-device graphical display of live environmental parameter curves (T/RH/Patm) with timestamped overlay—facilitating immediate field verification of sampling integrity and environmental context.
Sample Compatibility & Compliance
The LVS is compatible with all standard 47 mm circular filters used in regulatory particulate analysis—including quartz fiber (for OC/EC), Teflon® membrane (for ion chromatography), cellulose ester (for gravimetric weighing), and polycarbonate (for electron microscopy). Its flow control system maintains stability within ±2% of setpoint across dynamic backpressure up to 50 kPa, satisfying the load performance criteria in HJ 93–2013 and equivalent ISO 9001-certified calibration protocols. All firmware and hardware design elements conform to electromagnetic compatibility (EMC) Class B per EN 61326-1 and safety requirements per IEC 61010-1. The instrument’s IP55 enclosure rating ensures reliable operation in rain, dust, and temperature extremes encountered during roadside, industrial fence-line, and alpine monitoring campaigns.
Software & Data Management
Data acquisition and device management are supported through Derenda’s secure, browser-based CloudPM Platform—accessible via role-based authentication (RBAC) and compliant with audit trail requirements per GLP and ISO/IEC 17025. Each sampling event generates a digitally signed metadata package containing GPS coordinates, operator ID, filter RFID hash, environmental logs, and full flow-pressure-temporal profiles. Raw time-series data are stored in CSV/NetCDF format with embedded UTC timestamps and SI-unit annotations. For laboratories operating under FDA 21 CFR Part 11, optional electronic signature modules and 21-day immutable log retention can be enabled. Firmware updates are delivered OTA with SHA-256 integrity verification and rollback capability.
Applications
- Ambient air quality monitoring networks requiring PM10/PM2.5 compliance with national reference methods.
- Source apportionment studies involving offline chemical speciation (e.g., IC for anions/cations, ICP-MS for metals, thermal-optical analysis for carbon fractions).
- Short-term exposure assessment in occupational health and epidemiological cohort studies.
- Calibration and validation of low-cost sensor networks using collocated reference-grade filter sampling.
- Mobile monitoring campaigns utilizing vehicle-mounted or tripod-based deployment with real-time positional tagging.
- Long-term trend analysis in ecological research stations where power availability and environmental resilience are critical constraints.
FAQ
Does the LVS support automated filter exchange?
Yes—when upgraded with the optional Automatic Filter Changer (AFC) module, the LVS transforms into a multi-filter sequential sampler capable of unattended operation for up to 16 consecutive samples. The AFC integrates optically verified filter positioning and RFID-linked identity tracking.
Is the instrument certified for use in EU regulatory monitoring programs?
While not currently designated as a European Union Reference Method (ERM) device, the LVS meets technical specifications aligned with EN 12341:2014 and EN 14907:2005 for PM10/PM2.5 samplers and has been successfully deployed in cross-border validation trials coordinated by EEA-affiliated institutions.
Can raw data be exported in formats compatible with QGIS or R?
Yes—time-stamped environmental logs and flow metadata are natively exportable as GeoJSON, CSV with WGS84 coordinates, and NetCDF v4.0, enabling direct ingestion into spatial analytics workflows.
What maintenance intervals are recommended for field operation?
The pump assembly requires inspection every 5,000 operating hours; filter housing O-rings should be replaced annually or after 200 sampling cycles. Full metrological recalibration is advised biannually or following any impact event exceeding 3 g acceleration.
How is data security ensured during wireless transmission?
All cellular communications employ end-to-end TLS 1.2 encryption, certificate-pinned MQTT brokers, and AES-256 payload encryption. Device authentication uses X.509 client certificates provisioned at factory commissioning.
